def1.vhd

来自「实现D触发器的基本功能,D触发器的功能是时钟信号为上升沿时检测输入信号并将其赋值」· VHDL 代码 · 共 19 行

library ieee;
use ieee.std_logic_1164.all;
entity def1 is
    port( clk : in std_logic;
          d   : in std_logic;
          q   : out std_logic);
end def1;
architecture bhv of def1 is
    signal q1: std_logic;   ---???
begin
    process(clk)
    begin
    if clk'event and clk='1' then q1<=d;
    end if;
    q<=q1;           --     ???
    end process;
end bhv;